S-93548A916 3/4"-10 x 8" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• Enhanced anti-rotation performance through integrated square neck design, preventing bolt spin during installation and operation
• Reliable load-bearing capacity with Grade 2 strength rating and 60,000 PSI tensile strength for demanding applications
• Optimized thread engagement with UNC coarse threading and Class 2A fit, ensuring secure fastening in various materials
• Excellent surface durability with Rockwell B70 hardness, maintaining structural integrity under repeated stress
• Versatile partial threading allowing both clamping and alignment functions in wood-to-metal and structural connections
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe, environmentally conscious manufacturing

Professional Applications & Engineering Value

This zinc-plated steel carriage bolt delivers exceptional engineering value through its specialized square neck design that eliminates rotation during torque application, solving common installation challenges in structural frameworks and heavy equipment assembly. The partially threaded UNC coarse thread configuration provides optimal grip in wood, metal, and composite materials while allowing for material compression adjustment. With Grade 2 strength classification and 60,000 PSI tensile capacity, it withstands substantial vibrational and dynamic loads in construction, agricultural machinery, and transportation infrastructure. The zinc plating offers critical corrosion protection for outdoor and high-moisture industrial environments, while the standardized dimensions ensure compatibility with existing tooling and assembly processes.

Specification Summary & Compliance

This carriage bolt features precise Class 2A thread fit with 3/4"-10 UNC coarse threading and maintains dimensional compliance with ASTM A307, SAE J429, and ASME B18.5 specifications. The product demonstrates full conformity with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. Manufacturing follows standardized inch system measurements with controlled Rockwell B70 hardness and verified 60,000 PSI tensile strength to ensure consistent performance across industrial applications.